【摘要】 目的 了解北京市中小学生肥胖的流行现况及其相关因素，为中小学生肥胖干预提供科学依据。 方法 采取分阶段整群抽样方法，抽取北京市中小学生4582人进行问卷调查和身高、体重测量，并计算BMI指数。 结果 北京市中小学生肥胖检出率为9.7%，男生(12.6%)高于女生(7.1%)，城镇(10.3%)高于农村(6.6%)，随年龄增长降低;肥胖的发生与性别、年级、居住地区、是否有户外活动时间、喜吃多油食品等多种因素有关。 结论 北京市中小学生的肥胖率普遍偏高，应根据中小学生的年龄特点采取不同的预防措施。

    【关键词】 肥胖症;知识;行为;因素分析，统计学;学生

    A Cross-sectional Study on Obesity and the Influencing Factors for Students in Primary and Secondary Schools in Beijing/

    LIUXiu-rong* ，LILan，HAN Mei，et al.

    * Health Education Institute，Beijing Center for Disease Control and Prevention，Beijing(100013)，China

    【Abstract】 Objective To study the current status of obesity and the influencing factors of the students in primary and secondary schools and to pro-vide the baseline information for obesity prevention.Methods A cluster stratified sampling of4582primary or middle school students were questionnaired.Their body weight and height were measured and BMI was calculated.Results The prevalence rate of obesity was9.7% ......